Abstract #4997
Fast full-wave patient-specific field simulations in seconds with MARIE 2.0
Georgy Guryev1, Eugene Milshteyn2,3, Ilias I Giannakopoulos4,5, Elfar Adalsteinsson1,6,7, Lawrence L. Wald2,3,7, and Jacob K White1
1Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, United States, 2Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, MA, United States, 3Harvard Medical School, Boston, MA, United States, 4Center for Advanced Imaging Innovation and Research (CAI2R), Department of Radiology, New York University Grossman School of Medicine, New York, NY, United States, 5The Bernard and Irene Schwartz Center for Biomedical Imaging (CBI), Department of Radiology, New York University Grossman School of Medicine, New York, NY, United States, 6Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA, United States, 7Harvard-MIT Division of Health Sciences Technology, Cambridge, MA, United States
Synopsis
It was recently demonstrated that the combination of fast low-resolution tissue mapping and fast voxel-based field simulation can be used to perform a patient-specific MR safety check in minutes[4,5].However,field simulation required several of those minutes,making it too slow to perform the dozens of simulations that would be needed for patient-specific optimization.In this abstract we describe a compressed-perturbation-matrix technique that nearly eliminates the computational cost of including complex coils (or coils+shields) in voxel-based field simulation of tissue,thereby reducing simulation time from minutes to seconds.The approach is demonstrated on a wide variety of head+coil and head+coil+shield configurations,using the latest implementation of MARIE2.0.
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